/*
 * Copyright (C) 2019 xuexiangjys(xuexiangjys@163.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.xuexiang.xui.widget.button;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.os.Build;
import android.os.Handler;
import androidx.annotation.ColorRes;

import android.os.Looper;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.animation.Animation;
import android.view.animation.ScaleAnimation;
import android.widget.AdapterView;
import android.widget.FrameLayout;

import com.xuexiang.xui.R;
import com.xuexiang.xui.utils.ResUtils;


/**
 * 点击可出现水波效果的控件，作为父布局使用
 *
 * @author xuexiang
 * @since 2019-05-15 00:10
 */
public class RippleView extends FrameLayout {

    private int WIDTH;
    private int HEIGHT;
    private int frameRate = 10;
    private int rippleDuration = 400;
    private int rippleAlpha = 90;
    private Handler canvasHandler;
    private float radiusMax = 0;
    private boolean animationRunning = false;
    private int timer = 0;
    private int timerEmpty = 0;
    private int durationEmpty = -1;
    private float x = -1;
    private float y = -1;
    private int zoomDuration;
    private float zoomScale;
    private ScaleAnimation scaleAnimation;
    private Boolean hasToZoom;
    private Boolean isCentered;
    private Integer rippleType;
    private Paint paint;
    private Bitmap originBitmap;
    private int rippleColor;
    private int ripplePadding;
    private GestureDetector gestureDetector;
    private final Runnable runnable = new Runnable() {
        @Override
        public void run() {
            invalidate();
        }
    };

    private OnRippleCompleteListener onCompletionListener;

    public RippleView(Context context) {
        this(context, null);
    }

    public RippleView(Context context, AttributeSet attrs) {
        this(context, attrs, R.attr.RippleViewStyle);
    }

    public RippleView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context, attrs, defStyleAttr);
    }

    /**
     * Method that initializes all fields and sets listeners
     *
     * @param context Context used to create this view
     * @param attrs   Attribute used to initialize fields
     */
    private void init(final Context context, final AttributeSet attrs, int defStyleAttr) {

        initAttrs(context, attrs, defStyleAttr);

        initPaint();

        gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override
            public void onLongPress(MotionEvent event) {
                super.onLongPress(event);
                animateRipple(event);
                sendClickEvent(true);
            }

            @Override
            public boolean onSingleTapConfirmed(MotionEvent e) {
                return true;
            }

            @Override
            public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }
        });

        this.setDrawingCacheEnabled(true);
        this.setClickable(true);
    }

    private void initAttrs(Context context, AttributeSet attrs, int defStyleAttr) {
        final TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RippleView, defStyleAttr, 0);
        rippleColor = typedArray.getColor(R.styleable.RippleView_rv_color, ResUtils.getColor(context, R.color.xui_config_color_white));
        rippleType = typedArray.getInt(R.styleable.RippleView_rv_type, 0);
        hasToZoom = typedArray.getBoolean(R.styleable.RippleView_rv_zoom, false);
        isCentered = typedArray.getBoolean(R.styleable.RippleView_rv_centered, false);
        rippleDuration = typedArray.getInteger(R.styleable.RippleView_rv_rippleDuration, rippleDuration);
        frameRate = typedArray.getInteger(R.styleable.RippleView_rv_frameRate, frameRate);
        rippleAlpha = typedArray.getInteger(R.styleable.RippleView_rv_alpha, rippleAlpha);
        ripplePadding = typedArray.getDimensionPixelSize(R.styleable.RippleView_rv_ripplePadding, 0);
        canvasHandler = new Handler(Looper.getMainLooper());
        zoomScale = typedArray.getFloat(R.styleable.RippleView_rv_zoomScale, 1.03F);
        zoomDuration = typedArray.getInt(R.styleable.RippleView_rv_zoomDuration, 200);
        typedArray.recycle();
    }

    private void initPaint() {
        paint = new Paint();
        paint.setAntiAlias(true);
        paint.setStyle(Paint.Style.FILL);
        paint.setColor(rippleColor);
        paint.setAlpha(rippleAlpha);
        this.setWillNotDraw(false);
    }

    @Override
    public void draw(Canvas canvas) {
        super.draw(canvas);
        if (animationRunning) {
            canvas.save();
            if (rippleDuration <= timer * frameRate) {
                animationRunning = false;
                timer = 0;
                durationEmpty = -1;
                timerEmpty = 0;
                // There is problem on Android M where canvas.restore() seems to be called automatically
                // For now, don't call canvas.restore() manually on Android M (API 23)
                if (Build.VERSION.SDK_INT != 23) {
                    canvas.restore();
                }
                invalidate();
                if (onCompletionListener != null) {
                    onCompletionListener.onComplete(this);
                }
                return;
            } else {
                canvasHandler.postDelayed(runnable, frameRate);
            }

            if (timer == 0) {
                canvas.save();
            }

            canvas.drawCircle(x, y, (radiusMax * (((float) timer * frameRate) / rippleDuration)), paint);

            paint.setColor(Color.parseColor("#FFFF4444"));

            if (rippleType == 1 && originBitmap != null && (((float) timer * frameRate) / rippleDuration) > 0.4f) {
                if (durationEmpty == -1) {
                    durationEmpty = rippleDuration - timer * frameRate;
                }

                timerEmpty++;
                final Bitmap tmpBitmap = getCircleBitmap((int) ((radiusMax) * (((float) timerEmpty * frameRate) / (durationEmpty))));
                canvas.drawBitmap(tmpBitmap, 0, 0, paint);
                tmpBitmap.recycle();
            }

            paint.setColor(rippleColor);

            if (rippleType == 1) {
                if ((((float) timer * frameRate) / rippleDuration) > 0.6f) {
                    paint.setAlpha((int) (rippleAlpha - ((rippleAlpha) * (((float) timerEmpty * frameRate) / (durationEmpty)))));
                } else {
                    paint.setAlpha(rippleAlpha);
                }
            } else {
                paint.setAlpha((int) (rippleAlpha - ((rippleAlpha) * (((float) timer * frameRate) / rippleDuration))));
            }

            timer++;
        }
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        WIDTH = w;
        HEIGHT = h;

        scaleAnimation = new ScaleAnimation(1.0f, zoomScale, 1.0f, zoomScale, w >> 1, h >> 1);
        scaleAnimation.setDuration(zoomDuration);
        scaleAnimation.setRepeatMode(Animation.REVERSE);
        scaleAnimation.setRepeatCount(1);
    }

    /**
     * Launch Ripple animation for the current view with a MotionEvent
     *
     * @param event MotionEvent registered by the Ripple gesture listener
     */
    public void animateRipple(MotionEvent event) {
        createAnimation(event.getX(), event.getY());
    }

    /**
     * Launch Ripple animation for the current view centered at x and y position
     *
     * @param x Horizontal position of the ripple center
     * @param y Vertical position of the ripple center
     */
    public void animateRipple(final float x, final float y) {
        createAnimation(x, y);
    }

    /**
     * Create Ripple animation centered at x, y
     *
     * @param x Horizontal position of the ripple center
     * @param y Vertical position of the ripple center
     */
    private void createAnimation(final float x, final float y) {
        if (this.isEnabled() && !animationRunning) {
            if (hasToZoom) {
                this.startAnimation(scaleAnimation);
            }

            radiusMax = Math.max(WIDTH, HEIGHT);

            if (rippleType != 2) {
                radiusMax /= 2;
            }

            radiusMax -= ripplePadding;

            if (isCentered || rippleType == 1) {
                this.x = getMeasuredWidth() >> 1;
                this.y = getMeasuredHeight() >> 1;
            } else {
                this.x = x;
                this.y = y;
            }

            animationRunning = true;

            if (rippleType == 1 && originBitmap == null) {
                originBitmap = getDrawingCache(true);
            }
            invalidate();
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (gestureDetector.onTouchEvent(event)) {
            animateRipple(event);
            sendClickEvent(false);
        }
        return super.onTouchEvent(event);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {
        this.onTouchEvent(event);
        return super.onInterceptTouchEvent(event);
    }

    /**
     * Send a click event if parent view is a Listview instance
     *
     * @param isLongClick Is the event a long click ?
     */
    private void sendClickEvent(final Boolean isLongClick) {
        if (getParent() instanceof AdapterView) {
            final AdapterView adapterView = (AdapterView) getParent();
            final int position = adapterView.getPositionForView(this);
            final long id = adapterView.getItemIdAtPosition(position);
            if (isLongClick) {
                if (adapterView.getOnItemLongClickListener() != null) {
                    adapterView.getOnItemLongClickListener().onItemLongClick(adapterView, this, position, id);
                }
            } else {
                if (adapterView.getOnItemClickListener() != null) {
                    adapterView.getOnItemClickListener().onItemClick(adapterView, this, position, id);
                }
            }
        }
    }

    private Bitmap getCircleBitmap(final int radius) {
        final Bitmap output = Bitmap.createBitmap(originBitmap.getWidth(), originBitmap.getHeight(), Bitmap.Config.ARGB_8888);
        final Canvas canvas = new Canvas(output);
        final Paint paint = new Paint();
        final Rect rect = new Rect((int) (x - radius), (int) (y - radius), (int) (x + radius), (int) (y + radius));

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        canvas.drawCircle(x, y, radius, paint);

        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(originBitmap, rect, rect, paint);

        return output;
    }

    /**
     * Set Ripple color, default is #FFFFFF
     *
     * @param rippleColor New color resource
     */
    public void setRippleColor(@ColorRes int rippleColor) {
        this.rippleColor = getResources().getColor(rippleColor);
    }

    public int getRippleColor() {
        return rippleColor;
    }

    public RippleType getRippleType() {
        return RippleType.values()[rippleType];
    }

    /**
     * Set Ripple type, default is RippleType.SIMPLE
     *
     * @param rippleType New Ripple type for next animation
     */
    public void setRippleType(final RippleType rippleType) {
        this.rippleType = rippleType.ordinal();
    }

    public Boolean isCentered() {
        return isCentered;
    }

    /**
     * Set if ripple animation has to be centered in its parent view or not, default is False
     *
     * @param isCentered
     */
    public void setCentered(final Boolean isCentered) {
        this.isCentered = isCentered;
    }

    public int getRipplePadding() {
        return ripplePadding;
    }

    /**
     * Set Ripple padding if you want to avoid some graphic glitch
     *
     * @param ripplePadding New Ripple padding in pixel, default is 0px
     */
    public void setRipplePadding(int ripplePadding) {
        this.ripplePadding = ripplePadding;
    }

    public Boolean isZooming() {
        return hasToZoom;
    }

    /**
     * At the end of Ripple effect, the child views has to zoom
     *
     * @param hasToZoom Do the child views have to zoom ? default is False
     */
    public void setZooming(Boolean hasToZoom) {
        this.hasToZoom = hasToZoom;
    }

    public float getZoomScale() {
        return zoomScale;
    }

    /**
     * Scale of the end animation
     *
     * @param zoomScale Value of scale animation, default is 1.03f
     */
    public void setZoomScale(float zoomScale) {
        this.zoomScale = zoomScale;
    }

    public int getZoomDuration() {
        return zoomDuration;
    }

    /**
     * Duration of the ending animation in ms
     *
     * @param zoomDuration Duration, default is 200ms
     */
    public void setZoomDuration(int zoomDuration) {
        this.zoomDuration = zoomDuration;
    }

    public int getRippleDuration() {
        return rippleDuration;
    }

    /**
     * Duration of the Ripple animation in ms
     *
     * @param rippleDuration Duration, default is 400ms
     */
    public void setRippleDuration(int rippleDuration) {
        this.rippleDuration = rippleDuration;
    }

    public int getFrameRate() {
        return frameRate;
    }

    /**
     * Set framerate for Ripple animation
     *
     * @param frameRate New framerate value, default is 10
     */
    public void setFrameRate(int frameRate) {
        this.frameRate = frameRate;
    }

    public int getRippleAlpha() {
        return rippleAlpha;
    }

    /**
     * Set alpha for ripple effect color
     *
     * @param rippleAlpha Alpha value between 0 and 255, default is 90
     */
    public void setRippleAlpha(int rippleAlpha) {
        this.rippleAlpha = rippleAlpha;
    }

    public void setOnRippleCompleteListener(OnRippleCompleteListener listener) {
        this.onCompletionListener = listener;
    }

    /**
     * Defines a callback called at the end of the Ripple effect
     */
    public interface OnRippleCompleteListener {
        /**
         * 波纹结束
         *
         * @param rippleView
         */
        void onComplete(RippleView rippleView);
    }

    /**
     * 波纹类型
     */
    public enum RippleType {
        /**
         * 单波纹
         */
        SIMPLE(0),
        /**
         * 双波纹
         */
        DOUBLE(1),
        /**
         * 方形波纹
         */
        RECTANGLE(2);

        int type;

        RippleType(int type) {
            this.type = type;
        }
    }
}
